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1976年在建立色度标准中同时测得了可见光谱区(400~700 nm)的绝对光谱漫反射比。1980年我们仍采用辅助积分球法建立了近红外区(800~2000nm)的绝对光谱漫反射标准,该装置主要由一台光谱光度计,一个直径50mm的积分球,一个直径50mm、开口直径20mm的辅助积分球以及硫化铅光电接收器等组成。 标准板样品是用硫酸钡喷涂而成,实测得到同次喷涂标准板的漫反射比的差值在
In 1976, the absolute spectral diffuse reflectance of the visible region (400-700 nm) was measured simultaneously with the establishment of a colorimetric standard. In 1980, we still established the absolute spectral diffuse reflection standard in the near infrared region (800 ~ 2000nm) by using the auxiliary integrating sphere method. The device mainly consists of a spectrophotometer, a 50mm diameter integrating sphere, a diameter of 50mm, an opening diameter of 20mm The auxiliary integrating sphere and lead sulfide photoelectric receiver and other components. The standard plate sample is sprayed with barium sulfate, the difference between the measured value of diffuse reflectance